5NITSCH V. Die another day: duration in german import trade [ J ]. Review of World Economics, 2009, 145 ( 1 ) : 133 - 154.
6GULZAR S, SHAFI K. Factors influencing the trade balance of pakistan [ J ] . Interdisciplinary Journal of Contemporary Research in Business, 2011.
7CLARKE G R G, scoTr J w. Has the internet increased trade? developed and developing country evidence [ J]. Eco- nomic Inquiry, 2006, 44 (3) :465 - 484.
8BOJNEC S, FERTO I. Impact of the internet on manufactur- ing trade [ J ] . Journal of Computer Information Systems, 2009, 50(50) :124 - 132.
9BOYD D, CAPORALE G M, SMITH R. Real exchange rate effects on the balance of trade: cointegration and the Mar- shall - Lerner condition [ J ]. International Journal of Finance & Economics, 2001, 6(3) :187 -200.
10DANIEL1 J P. Does this site deliver? B2B eeommeree serv- ices for developing countries [ J ]. Information Society An International Journal, 2006, 19 ( 2 ) : 123 - 134.
